Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:16:06

Orbital Elements for CIA1AA,AB

WDS:	CIA1AA,AB	WDS ID/Discoverer
P:	1.433	Orbital period (years)
a:	0.065	Semi-major axis (arcseconds)
i:	24.53	Inclination (degrees)
Ω:	325.21	Longitude of ascending node (degrees)
T:	1996.337	Epoch of periastron passage (year)
e:	0.551	Eccentricity
ω:	248.86	Longitude of periastron (degrees)
Start-Year:	2025.0	Year
End-Year:	2025.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CIA1AA,AB

Position:	204521.12+573447.0	Epoch-2000 right ascension and declination
WDS-ID:	20454+5735	WDS designation
Discoverer Code:	CIA1AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	198084	HD catalog number
Hipparcos number:	102431	Hipparcos catalog number
V1:	5.2	Magnitude of the primary
V2:	5.5	Magnitude of the secondary
Equinox:		Equinox
Date:	2009	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CIA1AA,AB

WDS 6th Orbit including measures of CIA1AA,AB

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)

Ephemeris of CIA1AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.027    214.3
-------------------------

Disclaimer

Acknowledgements

The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.